\begin{tabular}{l*{6}{c}} \toprule
          &\multicolumn{1}{c}{Mean}&\multicolumn{1}{c}{SD}&\multicolumn{1}{c}{Median}&\multicolumn{1}{c}{Min.}&\multicolumn{1}{c}{Max.}&\multicolumn{1}{c}{Obs.}\\
\midrule
\underline{Individual level characteristics} &         &         &         &         &         &         \\
Female    &     0.20&     0.40&     0.00&        0&        1&     1007\\
Age       &    47.51&    17.39&    48.00&       18&       77&     1007\\
Party member&     0.95&     0.22&     1.00&        0&        1&     1007\\
Years of party membership (winsorized)&    15.55&    15.30&    10.00&        0&       56&     1007\\
Perceived voice within party (1 - 5 Likert scale)&     3.19&     1.24&     3.00&        1&        5&     1007\\
          &         &         &         &         &         &         \\
\underline{Prior experience} &         &         &         &         &         &         \\
Any experience campaigning&     0.78&     0.42&     1.00&        0&        1&     1007\\
Experience: door canvassing&     0.51&     0.50&     1.00&        0&        1&     1007\\
Experience: \# days door canvassing (winsorized)&    13.70&    32.62&     1.00&        0&      200&     1007\\
Experience: sticking poster&     0.62&     0.48&     1.00&        0&        1&     1007\\
Experience: campaign booth&     0.69&     0.46&     1.00&        0&        1&     1007\\
Experience: social media&     0.45&     0.50&     0.00&        0&        1&     1007\\
Experience: phone canvassing&     0.19&     0.39&     0.00&        0&        1&     1007\\
Experience: convince friends&     0.66&     0.47&     1.00&        0&        1&     1007\\
Experience: other&     0.13&     0.34&     0.00&        0&        1&     1007\\
          &         &         &         &         &         &         \\
\underline{Post treatment attitudes (control)}&         &         &         &         &         &         \\
I can make a difference through my involvement in [partyname].&     3.37&     1.07&     4.00&        1&        5&      326\\
I feel connected to [partyname].&     4.24&     0.81&     4.00&        1&        5&      326\\
My opinion is being taken into account to improve the party’s election campaign.&     2.75&     1.08&     3.00&        1&        5&      326\\
I have the feeling that [partyname] is interested in my opinion.&     3.02&     1.09&     3.00&        1&        5&      326\\
The [partyname] has an effective campaigning strategy.&     2.48&     1.10&     2.00&        1&        5&      326\\
          &         &         &         &         &         &         \\
\underline{Post treatment intentions (control)}&         &         &         &         &         &         \\
\# intended activities&     2.42&     1.77&     2.00&        0&        6&      330\\
Has no plans&     0.16&     0.37&     0.00&        0&        1&      330\\
Intention: door canvassing&     0.31&     0.46&     0.00&        0&        1&      330\\
Intention: \# days door canvassing&     2.24&     5.57&     0.00&        0&       35&      328\\
Intention: sticking posters&     0.39&     0.49&     0.00&        0&        1&      330\\
Intention: campaign booth&     0.56&     0.50&     1.00&        0&        1&      330\\
Intention: social media&     0.47&     0.50&     0.00&        0&        1&      330\\
Intention: phone canvassing&     0.12&     0.33&     0.00&        0&        1&      330\\
Intention: convince friends&     0.70&     0.46&     1.00&        0&        1&      330\\
Intention: other&     0.13&     0.34&     0.00&        0&        1&      330\\
          &         &         &         &         &         &         \\
\underline{Post treatment behavior (control)}&         &         &         &         &         &         \\
Knocked on any door&     0.00&     0.05&     0.00&        0&        1&      335\\
\# doors knocked&     0.10&     1.75&     0.00&        0&       32&      335\\
          &         &         &         &         &         &         \\
\underline{Provided comments (all treatment)}&         &         &         &         &         &         \\
Any comment&     0.51&     0.50&     1.00&        0&        1&      672\\
Nonsense comment&     0.02&     0.13&     0.00&        0&        1&      672\\
Constructive comment&     0.38&     0.49&     0.00&        0&        1&      672\\
Comment length&   104.52&   193.55&     7.00&        0&     1037&      672\\
          &         &         &         &         &         &         \\
\bottomrule \end{tabular}
